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# Quick algebra help watch

1. Don't know how to do this question... Supposed to make X the subject, and the answer is z/y (y+z) (from the answer booklet)
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2. (Original post by randomperson11)
Don't know how to do this question... Supposed to make X the subject, and the answer is z/y (y+z) (from the answer booklet)
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What is the question?
3. I inserted an image showing the question, is it not there? :/ sorry but I'm using my mobile and the TSR app is quite different...

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4. (Original post by randomperson11)
I inserted an image showing the question, is it not there? :/ sorry but I'm using my mobile and the TSR app is quite different...

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We can't see the question
5. Posted from TSR Mobile
Attached Images

2. multiply by xy
3. divide by y(y+z)

Spoiler:
Show
z/xy = y + z
z = xy(y+z)
x = z/y(y+z)
7. easy multiply everything on that equation by xy
move all terms containing an x onto one side
take out x as a common factor
8. I don't get how you get zy :/ Ik i'm really rubbish at maths >.<

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9. (Original post by surina16)
2. multiply by xy
3. divide by y(y+z)

Spoiler:
Show
z/xy = y + z
z = xy(y+z)
x = z/y(y+z)
THANK YOU, god I feel so dumb at times even when the question is quite easy >.< I was just really confused when I thought that the z minus the other z will cancel out and give a 0 there and yeahhh

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10. (Original post by thefatone)
easy multiply everything on that equation by xy
move all terms containing an x onto one side
take out x as a common factor
THANK YOUUU

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